7648651 has 4 divisors (see below), whose sum is σ = 7655152. Its totient is φ = 7642152.

The previous prime is 7648649. The next prime is 7648687. The reversal of 7648651 is 1568467.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1568467 = 37 ⋅42391.

It is a cyclic number.

It is not a de Polignac number, because 7648651 - 2¹ = 7648649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7648651.

It is not an unprimeable number, because it can be changed into a prime (7648951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (1913788).

Almost surely, 2^7648651 is an apocalyptic number.

7648651 is a deficient number, since it is larger than the sum of its proper divisors (6501).

7648651 is a wasteful number, since it uses less digits than its factorization.

7648651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500.

The product of its digits is 40320, while the sum is 37.

The square root of 7648651 is about 2765.6194604464. The cubic root of 7648651 is about 197.0281509583.

The spelling of 7648651 in words is "seven million, six hundred forty-eight thousand, six hundred fifty-one".